mapnik/test/unit/core/value_test.cpp

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#include "catch.hpp"
#include <mapnik/value/types.hpp>
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#include <mapnik/value.hpp>
TEST_CASE("mapnik::value")
{
SECTION("add/sub/mult/div")
{
mapnik::value v0 = 1; // mapnik::value_integer
mapnik::value v1 = 1.001; // mapnik::value_double
mapnik::value v2 = true; // mapnik::value_boolean
CHECK(v0.is<mapnik::value_integer>());
CHECK(v1.is<mapnik::value_double>());
CHECK(v2.is<mapnik::value_bool>());
// add
auto add0 = v0 + v1; // result value_double
auto add1 = v1 + v0;
auto add2 = v1 + v2; // result value_double
auto add3 = v2 + v1;
auto add4 = v0 + v2; // result value_integer
auto add5 = v2 + v0;
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auto add6 = v2 + v2; // result_integer
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// check type promotion
CHECK(add0.is<mapnik::value_double>());
CHECK(add1.is<mapnik::value_double>());
CHECK(add2.is<mapnik::value_double>());
CHECK(add3.is<mapnik::value_double>());
CHECK(add4.is<mapnik::value_integer>());
CHECK(add5.is<mapnik::value_integer>());
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CHECK(add6.is<mapnik::value_integer>());
//
CHECK(add6 == v0 + v0);
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// check commutative rules
CHECK(add0 == add1);
CHECK(add2 == add3);
CHECK(add4 == add5);
// sub
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auto sub0 = v0 - v1; // result value_double
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auto sub1 = v1 - v0;
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auto sub2 = v1 - v2; // result value_double
auto sub3 = v2 - v1;
auto sub4 = v0 - v2; // result value_integer
auto sub5 = v2 - v0;
auto sub6 = v2 - v2; // result value_integer
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CHECK(sub0.is<mapnik::value_double>());
CHECK(sub1.is<mapnik::value_double>());
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CHECK(sub2.is<mapnik::value_double>());
CHECK(sub3.is<mapnik::value_double>());
CHECK(sub4.is<mapnik::value_integer>());
CHECK(sub5.is<mapnik::value_integer>());
CHECK(sub6.is<mapnik::value_integer>());
// check commutative rules
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CHECK(sub0 == -sub1);
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CHECK(sub2 == -sub3);
CHECK(sub4 == -sub5);
CHECK(sub6 == v0 - v0);
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// multl
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auto mult0 = v0 * v1; // result value_double
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auto mult1 = v1 * v0;
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auto mult2 = v1 * v2; // result value_double
auto mult3 = v2 * v1;
auto mult4 = v0 * v2; // result value_integer
auto mult5 = v2 * v0;
auto mult6 = v2 * v2; // result value_integer
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CHECK(mult0.is<mapnik::value_double>());
CHECK(mult1.is<mapnik::value_double>());
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CHECK(mult2.is<mapnik::value_double>());
CHECK(mult3.is<mapnik::value_double>());
CHECK(mult4.is<mapnik::value_integer>());
CHECK(mult5.is<mapnik::value_integer>());
CHECK(mult6.is<mapnik::value_integer>());
// check commutative rules
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CHECK(mult0 == mult1);
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CHECK(mult2 == mult3);
CHECK(mult4 == mult5);
//
CHECK(mult6 == v0 * v0);
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// div
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auto div0 = v0 / v1; // result value_double
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auto div1 = v1 / v0;
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auto div2 = v1 / v2; // result value_double
auto div3 = v2 / v1;
auto div4 = v0 / v2; // result value_integer
auto div5 = v2 / v0;
auto div6 = v2 / v2; // result value_interger
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CHECK(div0.is<mapnik::value_double>());
CHECK(div1.is<mapnik::value_double>());
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CHECK(div2.is<mapnik::value_double>());
CHECK(div3.is<mapnik::value_double>());
CHECK(div4.is<mapnik::value_integer>());
CHECK(div5.is<mapnik::value_integer>());
CHECK(div6.is<mapnik::value_integer>());
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CHECK(div0 == 1.0/div1);
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CHECK(div2 == 1.0/div3);
CHECK(div4 == 1.0/div5);
CHECK(div6 == v0/v0);
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}
}